KR20210073312A - Livestock manure waste heat utilization device using livestock manure fermenter waste heat - Google Patents

Abstract

The present invention relates to a device for using livestock manure waste heat using waste heat from a livestock manure fermentation tank, and specifically, is provided to develop technology that can be used for drying sludge by recovering waste heat generated in the livestock manure fermentation tank. The device for using livestock manure waste heat includes: a fermentation tank waste heat recovery unit including at least one recovery device for recovering waste heat in the fermentation tank; a solid manure drying unit for drying solid livestock manure; and a control unit including a drying mode determining unit and a cooling mode determining unit, and controlling the at least one recovery device based on the operation mode of the at least one recovery device determined by the drying mode determining unit or the cooling mode determining unit. The cooling mode determining unit sets the operation mode to a first cooling mode or a second cooling mode to cool the fermentation tank, and the control unit operates the solid manure drying unit to lower the temperature of the fermentation tank based on the first cooling mode and operates the fermentation tank waste heat recovery unit to lower the temperature of the fermentation tank based on the second cooling mode. Through the present invention, the efficiency of a livestock manure treatment facility can be improved by reducing the production cost of solid fuel and pellet compost and controlling the temperature of the fermentation tank.

Description

Livestock manure waste heat utilization device utilizing waste heat from livestock manure fermentation tank {LIVESTOCK MANURE WASTE HEAT UTILIZATION DEVICE USING LIVESTOCK MANURE FERMENTER WASTE HEAT}

The present invention relates to an apparatus for using waste heat of livestock manure utilizing waste heat from a livestock manure fermenter, and in detail, to develop a technology that can be used for drying livestock manure sludge by recovering waste heat generated in the livestock manure fermenter.

Domestic livestock excreta is 134,000 tons/day, 92% of which is treated as compost by livestock farms and 8% by public treatment facilities, etc. As of 2014, 16 livestock manure biogasification facilities are in operation, but Related projects are insignificant.

Recently, in Korea, a drying-incineration sludge treatment technology has been developed that can be used as a heat source for sludge drying pre-treatment and exhaust incineration using the incineration waste heat of a sludge incinerator for treating sludge in a sewage and wastewater treatment plant.

In addition, a waste treatment technology capable of maintaining the digester temperature of about 30 ° C was developed by utilizing the fermentation heat of the aerobic digestion tank in the anaerobic digester to supply heating energy to the anaerobic digester in the organic waste treatment facility and to apply it to a small village.

However, the aerobic fermenter in domestic livestock excreta co-treatment plant has a very large seasonal temperature deviation, and since the activity of mesophilic microorganisms decreases due to high temperature, it is necessary to increase the efficiency of the manure treatment plant through appropriate temperature management. Since consumption of liquid manure and solid compost is seasonally limited, it is necessary to expand the market and increase added value by processing it into solid fuel or pellet compost.

The present invention relates to a technology that can be used for drying sludge by recovering waste heat generated in the livestock manure aerobic fermenter because livestock manure sludge has a high value as a raw material for solid fuel, but has a high moisture content, so a lot of energy is consumed for drying in the production process. want to develop

In an embodiment of the present invention, the livestock manure waste heat use device includes a fermenter waste heat recovery unit including at least one recovery device for recovering waste heat in the fermenter, a solid manure drying unit for drying solid livestock manure, and a drying mode determination and a cooling mode determining unit, and comprising a control unit for controlling the at least one recovery device based on the operation mode of the at least one recovery device determined by the drying mode determining unit or the cooling mode determining unit, wherein the cooling mode The determining unit sets the operation mode to the first cooling mode or the second cooling mode to cool the fermenter, and the control unit operates the solid manure drying unit to lower the temperature of the fermenter based on the first cooling mode, , characterized in that the control unit operates the fermenter waste heat recovery unit to lower the temperature of the fermenter based on the second cooling mode.

The drying mode determining unit according to an embodiment of the present invention sets the drying mode, and based on the drying mode, the control unit operates the fermenter waste heat recovery unit and the solid manure drying unit to dry the solid livestock manure.

The apparatus for using waste heat from livestock manure according to an embodiment of the present invention further includes a valve for controlling the at least one or more recovery devices based on an operation mode.

The operation mode according to an embodiment of the present invention is determined based on the first critical temperature, the second critical temperature, and the third critical temperature, the first critical temperature is the fermenter temperature, the second critical temperature and the third critical temperature is the heat storage tank temperature.

The control unit according to an embodiment of the present invention controls the at least one recovery device based on measured values of a plurality of temperature sensors.

At least one recovery device according to an embodiment of the present invention includes a heat exchanger for recovering at least one of heat of oxidation reaction and heat of fluid friction, a buffer tank for storing heat, a heat pump for producing high temperature water using the heat, and high temperature Includes a heat storage tank for storing the number.

The plurality of temperature sensors are attached to the fermenter heat exchanger and the heat storage tank according to an embodiment of the present invention, and the control unit measures an average value of the plurality of temperature sensors.

The solid manure drying unit according to an embodiment of the present invention includes a fan coil unit for supplying hot air to the solid manure drying unit using high temperature water and a heat recoverer for recovering thermal energy from exhaust heat of the solid manure drying unit.

The fan coil unit according to an embodiment of the present invention is connected to the heat storage tank, and the heat recovery unit is connected to the buffer tank.

In one embodiment of the present invention, the operating method of the apparatus for using livestock manure waste heat includes the steps of: a fermenter waste heat recovery unit recovering waste heat in a fermenter, a solid manure drying unit drying solid livestock manure, and a control unit drying mode determining unit and cooling and a mode determining unit, and controlling the at least one recovery device based on the operation mode determined by the drying mode determining unit or the cooling mode determining unit.

The method of operating at least one recovery device according to an embodiment of the present invention includes the steps of: recovering at least one heat of oxidation reaction heat and fluid friction heat by a fermenter heat exchanger; a buffer tank storing the heat; and a heat pump using the heat It includes a step of producing high-temperature water using the and a heat storage tank storing the high-temperature water.

The drying of the solid livestock manure according to an embodiment of the present invention includes: a fan coil unit supplying hot air to the solid manure drying unit using the high temperature water; and a heat recovery unit recovering thermal energy from exhaust heat of the solid manure drying unit including the steps of

In an embodiment of the present invention, the livestock manure waste heat use device includes a fermenter waste heat recovery unit including at least one recovery device for recovering waste heat in the fermenter, a solid manure drying unit for drying solid livestock manure, and a drying mode determination a cooling mode determining unit, a control unit controlling the at least one recovery device based on an operation mode of the at least one recovery device determined by the drying mode determining unit or the cooling mode determining unit; and a valve and a temperature sensor for controlling at least one recovery device, wherein the cooling mode determining unit sets the operation mode to a first cooling mode or a second cooling mode to cool the fermenter, and in the first cooling mode Based on, the control unit operates the solid manure drying unit to lower the temperature of the fermenter, and the control unit operates the fermenter waste heat recovery unit to lower the temperature of the fermenter based on the second cooling mode.

Through the present invention, it is possible to improve the efficiency of livestock manure treatment facilities by reducing the production cost of solid fuel, pellet compost, and controlling the temperature of the fermenter.

1 is a schematic diagram of an apparatus for using livestock manure waste heat according to an embodiment of the present invention.
Figure 2 is a block diagram of an apparatus for using livestock manure waste heat according to an embodiment of the present invention.
3 is a block diagram of a control unit according to an embodiment of the present invention.
4 is a block diagram of a drying mode according to an embodiment of the present invention.
5 is a block diagram of a first cooling mode according to an embodiment of the present invention.
6 is a block diagram of a second cooling mode according to an embodiment of the present invention.
7 is a flowchart illustrating an operating method of an apparatus for using livestock manure waste heat according to an embodiment of the present invention.

Hereinafter, the present disclosure will be described with reference to the accompanying drawings. As the present disclosure is capable of various changes and may have various embodiments, specific embodiments are illustrated in the drawings and the related detailed description is set forth. However, this is not intended to limit the present disclosure to specific embodiments, and should be understood to include all modifications and/or equivalents or substitutes included in the spirit and scope of the present disclosure. In connection with the description of the drawings, like reference numerals have been used for like components.

Expressions such as “comprises” or “may include” that may be used in the present disclosure indicate the existence of the disclosed function, operation, or component, and do not limit one or more additional functions, operations, or components. In addition, in the present disclosure, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, but one or more It should be understood that this does not preclude the possibility of addition or presence of other features or numbers, steps, operations, components, parts, or combinations thereof.

In this disclosure, expressions such as “or” include any and all combinations of the words listed together. For example, "A or B" may include A, may include B, or may include both A and B.

In the present disclosure, expressions such as “first,” “second,” “first,” or “second,” may modify various components of the disclosure, but do not limit the components. For example, the expressions do not limit the order and/or importance of corresponding components. Expressions can be used to distinguish one component from another. For example, both the first user device and the second user device are user devices, and represent different user devices. For example, without departing from the scope of the present disclosure, a first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present disclosure are used only to describe specific embodiments, and are not intended to limit the present disclosure. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present disclosure. does not

1 is a schematic diagram of an apparatus 10 for using livestock manure waste heat according to an embodiment of the present invention.

2 is a block diagram of an apparatus 10 for using livestock manure waste heat according to an embodiment of the present invention.

1 and 2, the livestock manure waste heat utilization apparatus 10 includes a fermenter waste heat recovery unit 110, a solid manure drying unit 120, and a control unit 130. In addition, it further includes a valve 140 for controlling the at least one recovery device based on the operation mode of the livestock manure waste heat utilization device (10).

The fermenter waste heat recovery unit 110 includes at least one recovery device for recovering waste heat in the fermenter. At this time, the at least one recovery device includes a heat exchanger 112 , a buffer tank 114 , a heat pump 116 , and a heat storage tank 118 . At this time, the fermenter may be a liquid livestock manure fermenter.

The heat exchanger 112 recovers at least one of heat of oxidation reaction of microorganisms and heat of fluid friction of the aeration device, and the buffer tank 114 stores the heat recovered through the heat exchanger 112 . The heat pump 116 uses the heat stored in the buffer tank 114 to produce high-temperature water, and the heat storage tank 118 stores the high-temperature water generated by the heat pump 116 . A plurality of temperature sensors 160 are attached to the heat exchanger 112 and the heat storage tank 118 .

The solid manure drying unit 120 dries the solid livestock manure.

The solid manure drying unit 120 includes a fan coil unit 122 and a heat recovery unit 124 . The fan coil unit 122 supplies hot air to the solid manure drying unit 120 using hot water. At this time, the fan coil unit 122 is connected to the heat storage tank 118 . The heat recovery unit 124 recovers thermal energy from the exhaust heat of the solid manure drying unit 120 . At this time, the heat recovery unit 124 is connected to the buffer tank 114 .

In general, the heat recovery unit 124 is divided into an air cooling type and a water cooling type, and preferably, both a water cooling type heat recovery type and an air cooling type heat recovery type may be installed. The water-cooled heat recoverer heats water by using the supplied heat, and supplies the heated water to the buffer tank 114 . The air-cooled heat recoverer receives heat from the water-cooled heat recoverer to heat the air, and allows the high-temperature air to be supplied to the solid manure drying unit 120 .

The heat recovery unit 124 provides a function of reusing the waste heat of the solid manure drying unit 120 and a function of reducing the emission of white smoke. Reuse of waste heat is to heat water so that it can be used as hot water supply and heating water, and to reduce white smoke emission is to reduce white smoke by lowering the temperature of exhaust gas to be discharged from the solid manure drying unit 120 . At this time, the white smoke is generated by the temperature difference between the exhaust gas and the atmosphere, and the degree is particularly severe in winter when the atmospheric temperature is low. Therefore, it is possible to protect the living environment by lowering the temperature and discharging exhaust gas.

This solid manure drying unit 120 is an example, and may be configured in a different form, in a different way. In addition, the solid manure drying unit 120 can produce humus soil that has undergone composting while having a drying period after drying using high heat through stabilization of the collected sludge.

The control unit 130 includes a drying mode determining unit 131 and a cooling mode determining unit 132, and is configured to control the operation mode of at least one recovery device determined by the drying mode determining unit 131 or the cooling mode determining unit 132. based on the control of at least one recovery device. The controller 130 may further include a controller 126 . The controller 126 controls on/off of the at least one device based on the temperature.

The controller 130 controls at least one recovery device by measuring the average value of the plurality of temperature sensors 160 attached to the heat storage tank 118 and the heat exchanger 112 . In addition, the operation mode can be set and operated according to the purpose of use.

The operation mode is determined based on the first threshold temperature, the second threshold temperature, and the third threshold temperature. In this case, the first critical temperature is a fermenter temperature, and the second critical temperature and the third critical temperature are the heat storage tank 118 temperature.

The operation mode can be set to the drying mode 133 through the first critical temperature, the operation mode is set to the first cooling mode 134 through the second critical temperature, and the operation mode is set to the second cooling mode ( 135) can be set.

3 is a block diagram of the controller 130 according to an embodiment of the present invention.

Referring to FIG. 3 , the control unit 130 includes a drying mode determining unit 131 and a cooling mode determining unit 132 . The cooling mode determining unit 132 includes a first cooling mode 134 and a second cooling mode 135 . The controller 130 controls the at least one recovery device based on the operation mode of the at least one recovery device determined by the drying mode determining unit 131 or the cooling mode determining unit 132 .

The liquid livestock manure fermenter must maintain an appropriate temperature range for activation of aerobic microorganisms in order to increase processing efficiency, and the heat storage tank 118 of the heat pump 116 is also appropriate in consideration of the type and energy use efficiency of the heat pump 116 . The temperature range should be maintained. Therefore, the livestock manure waste heat utilization device 10 attaches a temperature sensor 160 to the fermenter and heat storage tank 118 to measure the average value, and input the temperature setting of the fermenter and heat storage tank 118 to the controller 126 to at least one On-off control of the device can be performed.

The operation mode is determined based on the first threshold temperature, the second threshold temperature, and the third threshold temperature. In this case, the first critical temperature is a fermenter temperature, and the second critical temperature and the third critical temperature are the heat storage tank 118 temperature.

The drying mode determining unit 131 sets the drying mode 133, and based on the drying mode, the control unit 130 operates the fermentor waste heat recovery unit and the solid manure drying unit to dry the solid livestock manure. The cooling mode determining unit 132 sets the operation mode to the first cooling mode 134 or the second cooling mode 135 in order to cool the Hyojo.

Based on the first cooling mode 134, the control unit 130 operates the solid manure drying unit to lower the temperature of the fermenter, and the control unit 130 based on the second cooling mode 135 lowers the temperature of the fermenter. It is characterized by operating the waste heat recovery unit.

4 is a block diagram of a drying mode 133 according to an embodiment of the present invention.

4, in the drying mode 133, all the devices constituting the livestock manure waste heat utilization device 10 are operated. Waste heat generated in the fermenter waste heat recovery unit 110 is converted into hot water using a heat exchanger 112 , a buffer tank 114 , and a heat pump 116 and stored in the heat storage tank 118 . Thereafter, it is supplied to the fan coil unit 122 of the solid manure drying unit 120 to dry the solid livestock manure by hot air. At this time, by using the heat recovery device 124 to recover the exhaust heat of the hot air dryer and supply it to the buffer tank 114 , it is possible to increase the thermal energy utilization efficiency of the livestock manure waste heat utilization device 10 .

Drying mode 133 does not operate all devices of the livestock manure waste heat utilization device 10 when the first critical temperature is lower than the first critical temperature, and if the temperature of the heat storage tank 118 is higher than the preset heat storage tank 118 temperature due to the previous operation, the fan coil The drying operation is performed by operating the unit 122 . At this time, the fermenter is heated by operating the heat recovery unit 124 , the heat exchanger 112 , and the buffer tank 114 .

When the temperature is higher than the first critical temperature, it is divided into two again. If the first critical temperature is higher than the second critical temperature, only the fan coil unit 122 is operated to perform the drying operation. When it is above the first critical temperature and below the second critical temperature, all devices are operated so that the bottom pump produces high-temperature water in the heat storage tank 118 using the heat of the fermenter as a heat source, and the fan coil unit 122 performs drying operation. Thus, the exhaust heat of the dryer is recovered by the heat recovery unit 124 .

5 is a configuration diagram of the first cooling mode 134 according to an embodiment of the present invention.

Referring to FIG. 5 , the first cooling mode 134 mainly corresponds to the summer season and corresponds to a case where the temperature of the liquid livestock manure fermenter is very high due to the synergistic action of the heat of oxidation reaction of the microorganisms and the external temperature, and thus the activity of the microorganisms is reduced. When the activity of microorganisms is reduced, the efficiency of the equipment for recycling livestock manure is reduced, and this is an operation mode for lowering the temperature of the fermenter. The heat exchanger 112, the buffer tank 114 and the heat pump 116 and the fan coil unit 122 of the solid manure drying unit 120 corresponding to the fermenter waste heat recovery unit 110 are movable, but the solid manure drying unit The heat recovery unit 124 corresponding to (120) does not operate.

At this time, the drying operation of the solid livestock manure may or may not be done, and since the level of waste heat supplied from the fermenter is high, the temperature of the heat storage tank 118 can be maintained high, so the drying of the solid manure is relatively easy.

The first cooling mode 134 operates the heat exchanger 112 and the buffer tank 114 when the measured temperature is equal to or greater than the second critical temperature, and cools the fermenter using the heat recovery unit 124 as a radiator. On the other hand, when the measured temperature is below the second critical temperature, the heat exchanger 112, the buffer tank 114, and the heat pump 116 are operated to store the thermal energy of the fermenter in the heat storage tank 118, and then the fan coil unit 122. heats up to the outside temperature.

6 is a block diagram of the second cooling mode 135 according to an embodiment of the present invention.

Referring to FIG. 6 , the second cooling mode 135 mainly corresponds to a changing season or a low temperature season, and when the temperature of the livestock manure fermenter is higher than the active temperature of the mesophilic microorganism, the heat pump 116 of the fermenter waste heat recovery unit 110 ) and the heat storage tank 118 are not operated, and the buffer tank 114 and the heat exchanger 112 are operated. After transferring the heat of the fermenter to the buffer tank 114 by operating the heat exchanger 112, the heat from the buffer tank 114 is discharged to the outside air by using the heat recovery unit 124 of the solid manure drying unit 120 as a radiator. The temperature of the fermenter can be lowered. At this time, since high-temperature water is not generated, it is impossible to dry the solid livestock manure.

In the second cooling mode 135, when the measured temperature is the third critical temperature, the heat exchanger 112 and the buffer tank 114 are operated, and the fermenter is cooled by using the heat recovery unit 124 as a radiator.

In this way, the livestock manure waste heat utilization device 10 can improve the efficiency of the livestock manure treatment facility by reducing the production cost of solid fuel, pellet compost, and controlling the temperature of the fermenter.

7 is a flowchart illustrating an operating method of the apparatus 10 for using livestock manure waste heat according to an embodiment of the present invention.

Referring to FIG. 7 , in step S21 , the fermenter waste heat recovery unit 110 recovers waste heat in the fermenter.

For example, the heat exchanger 112 recovers at least one of heat of oxidation reaction of microorganisms and heat of fluid friction of the aeration device, and the buffer tank 114 stores the heat recovered through the heat exchanger 112 . The heat pump 116 uses the heat stored in the buffer tank 114 to produce high-temperature water, and the heat storage tank 118 stores the high-temperature water generated by the heat pump 116 .

In step S23, the solid drying unit dries the solid livestock manure.

For example, the fan coil unit 122 supplies hot air to the solid manure drying unit 120 using hot water. At this time, the fan coil unit 122 is connected to the heat storage tank 118 . The heat recovery unit 124 recovers thermal energy from the exhaust heat of the solid manure drying unit 120 . At this time, the heat recovery unit 124 is connected to the buffer tank 114 .

In step S25, the control unit 130 determines the operation mode.

For example, the controller 130 controls at least one recovery device by measuring the average value of the plurality of temperature sensors 160 attached to the heat storage tank 118 and the heat exchanger 112 . In addition, the operation mode can be set and operated according to the purpose of use.

The operation mode is determined based on the first threshold temperature, the second threshold temperature, and the third threshold temperature. In this case, the first critical temperature is a fermenter temperature, and the second critical temperature and the third critical temperature are the heat storage tank 118 temperature.

The operation mode can be set to the drying mode 133 through the first critical temperature, the operation mode is set to the first cooling mode 134 through the second critical temperature, and the operation mode is set to the second cooling mode ( 135) can be set.

In step S27, the controller 130 controls at least one device based on the determined mode.

For example, the drying mode 133 is a heat exchanger 112 corresponding to the fermenter waste heat recovery unit 110 , a buffer tank 114 and a heat pump 116 , and a fan coil unit of the solid manure drying unit 120 ( 120 ). 122) is movable, but the heat recovery unit 124 corresponding to the solid manure drying unit 120 does not operate. The first cooling mode 134 operates the heat exchanger 112 and the buffer tank 114 when the measured temperature is equal to or greater than the second critical temperature, and cools the fermenter using the heat recovery unit 124 as a radiator. On the other hand, when the measured temperature is below the second critical temperature, the heat exchanger 112, the buffer tank 114, and the heat pump 116 are operated to store the thermal energy of the fermenter in the heat storage tank 118, and then the fan coil unit 122. radiates heat to the outside temperature. In the second cooling mode 135, when the measured temperature is the third critical temperature, the heat exchanger 112 and the buffer tank 114 are operated, and the fermenter is cooled by using the heat recovery unit 124 as a radiator.

The operation method of the at least one recovery device includes the steps of: the heat exchanger 112 recovering at least one of oxidation reaction heat and fluid friction heat; the buffer tank 114 storing heat; and the heat pump 116 recovering heat. It includes a step of producing high-temperature water using the heat storage tank 118 and a step of storing the high-temperature water.

In the step of drying the solid livestock manure, the fan coil unit 122 supplies hot air to the solid manure drying unit 120 using high-temperature water, and the heat recovery unit 124 is used in the exhaust heat of the solid manure drying unit 120. and recovering thermal energy.

As for the processing procedure of a general livestock manure treatment facility, when livestock manure is received at the treatment plant, solid-liquid separation is performed through a solid-liquid separator. The liquid is subjected to aerobic fermentation or anaerobic digestion, then liquid fertilizer is stored, and solid sludge is stored and dried with fermentation heat to produce solid compost.

Livestock manure waste heat utilization apparatus 10 according to an embodiment of the present invention can increase added value by processing solid sludge into pellets as solid fuel or pellet compost. At this time, energy consumption is high because drying is required to an appropriate moisture content for pellet processing. In order to solve the problem of requiring a lot of energy, the livestock manure waste heat utilization device 10 recovers the waste heat of the aerobic fermenter through the fermenter waste heat recovery unit 110 and uses it for drying. If the heat of the aerobic fermentation tank is recovered, it is possible to control the excessive increase in the temperature of the fermenter due to aerobic fermentation, thereby increasing the activity of mesophilic microorganisms to increase the treatment efficiency.

10: Livestock manure waste heat utilization device
110: fermenter waste heat recovery unit
112: heat exchanger
114: buffer tank
116: heat pump
118: heat storage tank
120: solid manure drying unit
122: fan coil unit
124: heat recovery device
126: controller
130: control unit
131: drying mode determining unit
132: cooling mode determining unit
133: dry mode
134: first cooling mode
135: second cooling mode
140: valve
160: temperature sensor

Claims (13)

a fermenter waste heat recovery unit including at least one recovery device for recovering waste heat in the fermenter;
Solid manure drying unit for drying solid livestock manure; and
A control unit including a drying mode determining unit and a cooling mode determining unit, and controlling the at least one recovery device based on the operation mode of the at least one recovery device determined by the drying mode determining unit or the cooling mode determining unit and,
The cooling mode determining unit sets the operation mode to a first cooling mode or a second cooling mode to cool the fermenter,
Based on the 1 cooling mode, the control unit operates the solid manure drying unit to lower the temperature of the fermenter,
Livestock manure waste heat utilization device, characterized in that the control unit operates the fermenter waste heat recovery unit to lower the temperature of the fermenter based on the two cooling modes. According to claim 1,
The drying mode determining unit sets a drying mode,
Livestock manure waste heat using device in which the control unit operates the fermenter waste heat recovery unit and the solid manure drying unit based on the drying mode to dry the solid livestock manure. According to claim 1,
Livestock manure waste heat utilization device further comprising a valve for controlling the at least one recovery device based on the operation mode. 4. The method of claim 3,
The operation mode is determined based on the first threshold temperature, the second threshold temperature, and the third threshold temperature,
The first critical temperature is a fermenter temperature,
The second critical temperature and the third critical temperature are livestock manure waste heat utilization device that is a heat storage tank temperature. According to claim 1,
The control unit is a livestock manure waste heat utilization device for controlling the at least one recovery device based on the measured values of the plurality of temperature sensors. 6. The method of claim 5,
The at least one recovery device comprises:
a heat exchanger for recovering at least one of heat of oxidation reaction and heat of fluid friction;
a buffer tank for storing the heat;
a heat pump that uses the heat to produce high-temperature water; and
Livestock manure waste heat utilization device including a heat storage tank for storing the high temperature water. 7. The method of claim 6,
The plurality of temperature sensors are attached to the heat exchanger and the heat storage tank,
The control unit is a livestock manure waste heat utilization device for measuring the average value of the plurality of temperature sensors. 7. The method of claim 6,
The solid manure drying unit,
a fan coil unit for supplying hot air to the solid manure drying unit using the high temperature water; and
Livestock manure waste heat utilization device comprising a heat recoverer for recovering heat energy from the exhaust heat of the solid manure drying unit. 9. The method of claim 8,
The fan coil unit is connected to the heat storage tank,
The heat recovery device is a livestock manure waste heat use device connected to the buffer tank. The operation method of the livestock manure waste heat utilization device is,
Recovering waste heat in the fermenter by a fermenter waste heat recovery unit;
The solid manure drying unit drying the solid livestock manure; and
controlling, by a control unit, a drying mode determining unit and a cooling mode determining unit, at least one recovery device based on the operation mode determined by the drying mode determining unit or the cooling mode determining unit;
Method of operation of an apparatus for using livestock manure waste heat comprising a. 11. The method of claim 10,
The step of controlling the at least one recovery device comprises:
The heat exchanger recovers at least one of heat of oxidation reaction and heat of fluid friction;
a buffer tank storing the heat;
The heat pump uses the heat to produce high-temperature water; and
A method of operating an apparatus for using waste heat from livestock manure comprising the step of storing the hot water in a heat storage tank. 12. The method of claim 11,
The step of drying the solid livestock manure,
supplying hot air by the fan coil unit to the solid manure drying unit using the high temperature water; and
A method of operating an apparatus for using waste heat from livestock manure, comprising the step of recovering heat energy from exhaust heat of the solid manure drying unit by a heat recoverer. a fermenter waste heat recovery unit including at least one recovery device for recovering waste heat in the fermenter;
Solid manure drying unit for drying solid livestock manure;
a control unit including a drying mode determining unit and a cooling mode determining unit, the control unit controlling the at least one recovery device based on the operation mode of the at least one recovery device determined by the drying mode determining unit or the cooling mode determining unit;
a valve for controlling the at least one recovery device based on the operation mode; and
including a temperature sensor;
The cooling mode determining unit sets the operation mode to a first cooling mode or a second cooling mode to cool the fermenter,
Based on the 1 cooling mode, the control unit operates the solid manure drying unit to lower the temperature of the fermenter,
Livestock manure waste heat utilization device, characterized in that the control unit operates the fermenter waste heat recovery unit to lower the temperature of the fermenter based on the two cooling modes.

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